Kun suutari on korjannut kengät ja ompelija on ommellut napin kiinni, arki tuntuu heti helpommalta.

Kun introduces a subordinate clause and here it means when.

So the structure is:

• Kun suutari on korjannut kengät ja ompelija on ommellut napin kiinni = When the cobbler has repaired the shoes and the seamstress has sewn the button on
• arki tuntuu heti helpommalta = everyday life immediately feels easier

In Finnish, it is very common to put the when-clause first, just as in English:

• When X happens, Y happens

You could also think of kun here as meaning something like once or after, depending on context, but when is the most direct match.

On korjannut and on ommellut are the present perfect forms in Finnish.

They are built like this:

• on = has
• korjannut = repaired
• ommellut = sewn

So:

• on korjannut = has repaired
• on ommellut = has sewn

This tense is used when the action is completed and relevant to the present situation. In this sentence, the point is:

• first the shoes get repaired
• first the button gets sewn on
• then life feels easier

If you used korjasi and ompeli, that would be simple past:

• repaired
• sewed

That would sound more like a narration of past events. The perfect here helps connect the completed actions to the present result.

They are the past participle forms used in the Finnish perfect tense.

The perfect tense is formed with:

• olla in the present tense
• • the active past participle

Examples from the sentence:

• on korjannut
• on ommellut

The participle usually ends in forms like:

• -nut / -nyt
• or -lut / -lyt, -rut / -ryt, etc., depending on the verb

For these verbs:

• korjata → korjannut
• ommella → ommellut

So the full pattern is very similar to English has repaired, has sewn.

These are both objects, but they are in different object forms.

• kengät is the plural form of kenkä = shoe
• napin is the singular genitive/accusative-looking object form of nappi = button

In Finnish, objects change form depending on things like:

• whether the object is singular or plural
• whether the action is seen as complete
• whether the sentence is affirmative or negative

Here the actions are completed, so we get total objects:

• kengät = the shoes, as a completed whole
• napin = the button, as a completed whole

Why not kenkiä or nappia? Because those would suggest a partial object, which is often used for ongoing, incomplete, indefinite, or negative situations.

Compare:

• suutari korjaa kengät = the cobbler repairs the shoes
• suutari korjaa kenkiä = the cobbler is repairing shoes / repairs shoes in general

And:

• ompelija ompelee napin kiinni = the seamstress sews the button on
• ompelija ompelee nappia = the seamstress is sewing a button / sewing at the button, not necessarily as a completed result

Because napin is the object form used here for a completed singular object.

The basic dictionary form is:

• nappi = button

But in this sentence, the button is the thing being sewn on completely, so Finnish uses the total object form:

• napin

This is extremely common in Finnish with completed actions.

For example:

• Luen kirjan = I read the book
• Otan omenan = I take the apple
• Ompelen napin kiinni = I sew the button on

So nappi is the basic form, but napin is the form required by the grammar of the sentence.

Here kiinni means something like attached, on, or fastened.

So:

• ommella napin kiinni = to sew a button on
• more literally: to sew the button attached

This is a very common Finnish word with several meanings depending on context. It can mean:

• closed/shut
  
  • ovi on kiinni = the door is closed
• attached/fastened
  • nappi on kiinni = the button is attached / done up
• caught
  • jäin kiinni = I got caught

In this sentence, it gives the idea that the button is not just being sewn, but sewn into place so that it is attached properly.

Yes, but the meaning would be less specific.

• ommellut napin = has sewn a button
• ommellut napin kiinni = has sewn the button on / sewn the button fast

The version with kiinni emphasizes the result: the button is now attached where it should be.

This is a very natural thing to say in Finnish when talking about fastening something.

Arki means everyday life, daily life, or the ordinary routine of life.

It does not mean just a day. It refers more to normal, practical life as opposed to special occasions.

So in this sentence:

• arki tuntuu heti helpommalta = everyday life immediately feels easier

The idea is that small repairs make normal life smoother and easier.

This is because the verb tuntua often takes an adjective in the ablative form, ending in -lta/-ltä.

So:

• helppo = easy
• helpompi = easier
• helpommalta = easier, in the form required after tuntua

Compare:

• Se tuntuu hyvältä = It feels good
• Se tuntuu oudolta = It feels strange
• Arki tuntuu helpommalta = Everyday life feels easier

So helpommalta is not random: it is the comparative adjective helpompi put into the case that tuntua commonly uses.

Because the sentence implies a comparison:

• life is easier than before
• life is easier once those problems are fixed

Finnish often uses the comparative in exactly this way, even if the thing being compared is not said explicitly.

So:

• helppo = easy
• helpompi = easier
• helpommalta = feels easier

The sentence does not need to say what it is easier than. That comparison is understood from context.

Finnish word order is flexible, but it is not random.

In this sentence:

• arki is the subject
• tuntuu is the verb
• heti modifies the whole situation, meaning immediately
• helpommalta is the complement of tuntuu

So the order:

• arki tuntuu heti helpommalta

is a very natural neutral order.

If you said:

• heti arki tuntuu helpommalta

that would place more emphasis on heti. It is possible in some contexts, but it is less neutral.

Because ja simply joins two parallel parts inside the same subordinate clause:

• suutari on korjannut kengät
• ompelija on ommellut napin kiinni

Together they form one kun clause:

• Kun A ja B, C

Finnish normally does not put a comma before ja when it joins two items like this.

But there is a comma after the whole kun clause:

• Kun ..., arki tuntuu ...

That comma separates the subordinate clause from the main clause.

Because they are the subjects of their clauses, so they are in the nominative basic form.

• suutari = cobbler
• ompelija = seamstress / tailor / sewer, depending on context

In Finnish, the subject of a normal affirmative clause is usually in the nominative:

• suutari on korjannut
• ompelija on ommellut
• arki tuntuu

So all three of these nouns are subjects, and that is why they appear in their basic form.

Grammatically, ompelija itself is not marked for gender in Finnish.

Finnish nouns do not usually show grammatical gender, and Finnish also does not have he/she as separate pronouns in the way English does.

So ompelija means someone who sews, such as:

• seamstress
• tailor
• dressmaker
• sewer

In English, the most natural translation depends on context. If the translation you were shown says seamstress, that is a contextual choice, not something built into the Finnish word itself.

In a strict dictionary sense, kun usually means when, but in real usage it can sometimes feel close to once or after.

In this sentence:

• Kun suutari on korjannut kengät ja ompelija on ommellut napin kiinni, arki tuntuu heti helpommalta

the meaning is clearly that after those things have been done, life feels easier.

So although when is the best direct translation, an English speaker may naturally interpret the sentence as:

• Once the cobbler has repaired the shoes and the seamstress has sewn the button on, everyday life feels easier
• or even
• After the cobbler has repaired the shoes and the seamstress has sewn the button on, everyday life feels easier

That is a matter of interpretation, not a different Finnish grammar rule.

It can be read as either, depending on context, but it sounds very natural as a general statement.

It expresses an idea like:

• when practical problems are fixed, everyday life becomes easier

Finnish often uses a structure like this for general observations:

• Kun X on tehty, Y tuntuu paremmalta = When X has been done, Y feels better

So even though the grammar looks like it could describe one specific event, the sentence also works very well as a broader statement about daily life.